<template>
  <!-- 头部部分 -->
  <header class="header">
    <h1>todos</h1>
  
    <input v-model=" todoName" @keyup.enter="add" class="new-todo" placeholder="请输入任务名称" autofocus />
  </header>
</template>

<script>
export default {
  data () {
    return {
      todoName:''
    }
  },
  methods: {
add (){
  if(this.todoName.trim()==='')return
  this.$emit('add',this.todoName)
  this.todoName = ''
}
  }
}
</script>

<style></style>
